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Water-soluble and/or water-swellable hybrid polymer

Active Publication Date: 2020-01-09
CLARIANT INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is related to a hybrid polymer that can dissolve in water and swell in it. The hybrid polymer consists of a combination of water-soluble and synthetic polymers. The synthetic polymer has repeating units that are derived from a specific formula. The hybrid polymer is produced through a process called radical precipitation polymerization, which involves polymerizing the components in a polar solvent. The technical effect of this invention is the creation of a polymer that has improved properties and can be used in various applications.

Problems solved by technology

Environmental, economic and sustainability questions are restricting the use of products derived from this limited resource: synthetic surfactants, for example, have been blamed for environmental incidents, particularly vis-à-vis aquatic problems in rivers and lakes.
However, some natural polymers or derivatives thereof have some performance drawbacks, such as leaving residues and / or having poor solubility in an aqueous formulation environment.
However, these disclosures do not provide final polymers that have acceptable performance.
Furthermore, the polymers provided are not in a form that is sufficiently useful.

Method used

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  • Water-soluble and/or water-swellable hybrid polymer
  • Water-soluble and/or water-swellable hybrid polymer
  • Water-soluble and/or water-swellable hybrid polymer

Examples

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example 1

[0298]In a 1-Liter Quickfit round bottom flask equipped with a reflux condenser, sub surface gas inlet tubing, inner temperature sensor and overhead agitator 373.6 g dry 2-methylpropan-2-ol and 6.4 g deionized water was dosed. 80 g ACDMT was charged. The ACDMT was neutralized to a pH of 7 to 8 by injection of gaseous ammonia above the surface. The temperature was kept below 40° C. Then 9 g of xanthan gum with a homogenous water content of 3 wt.-%, 0.85 g trimethylolpropane triacrylate (TMPTA) and 0.9 g N,N,N′,N′-tetramethylene diamine was dissolved / dispersed in the reaction mixture. At agitation of 200 rpm nitrogen was inject subsurface for 1 h. During this time the temperature of the reaction mixture was raised and stabilized to 60° C. with help of a water bath. At 60° C. the pH was readjusted to a pH of 7 to 8. Then the reaction was initiated by a continuously dosing of a mixture containing 20 g 2-methylpropan-2-ol, 1 g tert.-butylhydroperoxide (70% in water) and 1.35 g dimethyl 2...

example 2

[0300]In a 1-Liter Quickfit round bottom flask equipped with a reflux condenser, sub surface gas inlet tubing, inner temperature sensor and overhead agitator 190 g dry 2-methylpropan-2-ol, 190 g dimethylketone and 6 g deionized water was dosed. 50 g ACDMT was charged and ACDMT was neutralized to a pH of 7 to 8 by addition of 20.2 g sodium hydrogen carbonate. The temperature was kept below 40° C. Then 27.5 g of xanthan gum with a homogenous water content of 3 wt.-%, 0.7 g trimethylolpropantriacrylate (TMPTA) and 0.6 g N,N,N′,N′-tetramethylene diamine was dissolved / dispersed in the reaction mixture. At agitation of 200 rpm nitrogen was inject subsurface for 1 h. During this time the temperature of the reaction mixture was raised and stabilized to 60° C. with help of a water bath. At 60° C. the pH was readjusted to a pH of 7 to 8. Then the reaction was initiated by a continuously dosing of a mixture containing 20 g 2-methylpropan-2-ol, 0.72 g tert.-butylhydroperoxide (70% in water) and...

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Abstract

A water-soluble and / or water-swellable hybrid polymer comprising:(i) from 5 wt.-% to 95 wt.-% water-soluble and / or water-swellable polysaccharide polymer;(ii) from 5 wt.-% to 95 wt.-% synthetic polymer comprising:(a) from 90 mol-% to 99.9 mol-%, preferably 95 mol-% to 99.5 mol-% of repeating units according to Formula (1)(b) from 0.01 mol-% to 10 mol-%, preferably to 5 mol-%, more preferably to 3 mol-% of crosslinking or branching units, wherein the crosslinking or branching units result from the incorporation of a monomer comprising at least two olefinically unsaturated double bonds;characterised in that the components (i) and (ii) are polymerised by radical precipitation polymerisation in a polar solvent.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a water-soluble and / or water-swellable hybrid polymer.BACKGROUND OF THE INVENTION[0002]Cleansing and caring for the skin, scalp, and hair is very important for general hygiene e.g. for removal of unwanted materials such as sebum, oils, dirt, makeup, or for moisturisation, colouring or protection. Many cosmetic products require a certain minimum viscosity in order to achieve ease of application to the substrate and / or retention on the substrate to be treated. Many cosmetic products comprise viscosity-increasing or rheology-influencing agents. These are often referred to as thickening agents, thickeners or gelling agents. Thickening agents used in cosmetics or personal hygiene products include viscous liquids such as polyethylene glycol, synthetic polymers such as polyacrylic acid and vegetable gums. In the 1990s, innovative thickeners based on 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) and their salts were introduc...

Claims

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Application Information

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IPC IPC(8): C08F251/00A61K8/73A61K8/81C08F220/56
CPCA61K2800/48A61K2800/546C08F220/56A61K2800/5424C08F251/00A61K8/73A61K8/8158A61Q1/02A61Q1/04A61Q1/10A61Q1/14A61Q3/04A61Q5/02A61Q5/06A61Q5/12A61Q17/02A61Q17/04A61Q19/00A61Q19/002A61Q19/004A61Q19/02A61Q19/04A61Q19/08A61Q19/10C08B37/003C08B37/0033C08B37/0042C08B37/0084C08B37/0096C08F2/14C08F220/585
Inventor FISCHER, DIRKBERZ, KATHARINASTARKULLA, GUNDULA
Owner CLARIANT INT LTD